package com.yby6.common.utils.file;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import lombok.RequiredArgsConstructor;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;

/**
 * @program: yangbuyi-rbac
 * @ClassName: Base64DecodeMultipartFile
 * @create: 2022-04-25 16:25
 * @author: Yang Shuai
 * @since： JDK1.8
 * @Base64DecodeMultipartFile: $
 **/

public class Base64DecodeMultipartFile implements MultipartFile {
    private final byte[] imgContent;
    private final String header;

    public Base64DecodeMultipartFile (byte[] imgContent, String header) {
        this.imgContent = imgContent;
        this.header = header.split(";")[0];
    }

    @Override
    public String getName () {
        return System.currentTimeMillis() + Math.random() + "." + header.split("/")[1];
    }

    @Override
    public String getOriginalFilename () {
        return System.currentTimeMillis() + (int) Math.random() * 10000 + "." + header.split("/")[1];
    }

    @Override
    public String getContentType () {
        return header.split(":")[1];
    }

    @Override
    public boolean isEmpty () {
        return imgContent == null || imgContent.length == 0;
    }

    @Override
    public long getSize () {
        return imgContent.length;
    }

    @Override
    public byte[] getBytes () throws IOException {
        return imgContent;
    }

    @Override
    public InputStream getInputStream () throws IOException {
        return new ByteArrayInputStream(imgContent);
    }

    @Override
    public void transferTo (File dest) throws IOException, IllegalStateException {
        new FileOutputStream(dest).write(imgContent);
    }
}
